Acupuncture Needle Modified With Supercritical Fluid

August 28, 2019 updated by: Chang Gung Memorial Hospital

Study on Improving Acupuncture Needles and Physical Properties of Acupoints With Supercritical Fluid

Objective: To compare the differences in the needling sensation with acupuncture needles surface treated with nitrogen applied supercritical fluid (SCF-N) and stainless steel needles.

Materials and Methods: This was a double-blind prospective cohort study. The acupuncture needles were randomly used in this experiment, including the SCF-N-treated needles and the control stainless steel needles. LI 4 (Hegu) and LI 11 (Quchi) acupuncture points in the Yangming Large Intestine Meridian of Hand were treated. Physical electrical resistance , scanning electron microscopy, energy dispersive spectrometry, and visual analog scale score including the sensations of soreness, numbness, distention, and heaviness were assessed.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This was a double-blinded prospective cohort study. The acupuncture needles were first separated into two groups. One group of needles was subjected to SCF-N treatment while the other was not. The needles were then randomly analyzed with scanning electron microscope and energy dispersive X-ray spectroscopy to ensure quality and minimize experimental error. For each participant, one hand was randomly assigned to the treatment group with SCF-N-treated acupuncture needles and the other hand was assigned to the control group with the stainless steel needles. The time interval between the acupuncture treatment of the two groups was about two hours. In order to examine and distinguish the difference between the two groups, de-qi VAS score was recorded by the volunteers during needle insertion and the electrical resistance by electrical measurement.

The acupuncture needles used in this experiment, including the SCF-N-treated needles and the control stainless steel needles, were produced under the same conditions, in the same factory (Dong Bang acupuncture Inc.), and on the same day, to minimize experimental error.

The process of SCF treatment:. First, the stainless steel chamber and quartz carrier were sterilized using alcohol and autoclaving. Next, the needles were placed on the quartz carrier with the tip pointing upwards and then placed in the chamber and covered. Carbon dioxide was used to remove atmospheric components from the chamber and required volume of ammonia gas was passed. The pressure was increased up to 3000 pound per square inch(psi) and temperature up to 120℃. An hour later, the pressure was relieved and the process of SCF treatment completed. After completion of the treatment, the needles were then randomly selected for material analysis and electrical measurement. Following this, the needles were stored in a vacuum bag. This was done to reduce the influence of atmospheric contaminants on the needles after treatment, resulting in oxidation and rusting. Finally, there would be heterogeneous contact between the inorganic metal and the acupuncture needle. Hence, nitrogen was selected as the main agent for SCF treatment.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
20

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Taiwan
      • Kaohsiung, Taiwan, 833
        • Kaohsiung Chang Gung Memorial Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

20 years to 40 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Healthy volunteer aged 20 to 40 years
  • Provided informed consent

Exclusion Criteria:

  • Women with pregnancy or breast feeding
  • Bleeding tendencies (platelet counts less than 20000 and/or thrombocytopenic purpura)
  • Volunteers with chronic medical conditions and anti-coagulants use
  • Volunteers with pacemakers
  • Fasting
  • Unwilling to provide informed consent

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: SCF-N-treated needle acupuncture
For each participant, one hand was randomly assigned to the experimental group with SCF-N-treated needle acupuncture .
Device: SCF-N-treated needles
The SCF-N-treated needles were used for acupuncture at LI 4 (Hegu) and LI 11 (Quchi) acupoints in the experimental groups..
Sham Comparator: untreated needle acupuncture
The other hand of participant in experimental group was assigned to the control group with untreated needle acupuncture.
Device: Untreated needles
he untreated needles were used for acupuncture at LI 4 (Hegu) and LI 11 (Quchi) acupoints in the control groups.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Resistance of the meridian
Time Frame: immediately after acupuncture needling
Electrical resistance was measured by applying a fixed electric current (110 µA) for 1 second and recording the I-V curve. A linear relationship of voltage=current x resistance was expected. The analyzer used in this experiment was Agilent B1500, a semi-conductor analyzer able to measure electrical resistance with high accuracy.
immediately after acupuncture needling

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Modified Visual Analog Scale (VAS) Score
Time Frame: immediately after acupuncture needling
The VAS score was used to assess the needling sensations of de-qi, i.e. distension, soreness, heaviness, or numbness. VAS score 0 indicated no sensation, while VAS 10 indicated the strongest sensation.
immediately after acupuncture needling

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Chang Gung Memorial Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 1, 2017

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
July 31, 2018

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
July 31, 2018

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
August 26, 2019

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 28, 2019

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 29, 2019

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 29, 2019

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 28, 2019

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2018

More Information

Terms related to this study

Keywords

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • CMRPG8G0331

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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